<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        /* var name="zhangsan"
        var go=function(){
            console.log(this.name)
        }    
        go()     //zhangsan  //window.go()    谁调用window,this就指向谁 */
        var name="zhangsan"
        var obj={
            name:"lisi"
        }
        var go=function(){
            console.log(this.name)
        }.bind(obj)
        go()      //lisi
    </script>
</body>
</html>